/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2017 by Hitachi Vantara : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************/

package org.pentaho.di.plugins.examples.step;

import java.util.ArrayList;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CCombo;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.ShellAdapter;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.swt.widgets.Text;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.Props;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.fileinput.FileInputList;
import org.pentaho.di.core.row.RowMeta;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMeta;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.TransPreviewFactory;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDialogInterface;
import org.pentaho.di.ui.core.dialog.EnterNumberDialog;
import org.pentaho.di.ui.core.dialog.EnterSelectionDialog;
import org.pentaho.di.ui.core.dialog.EnterTextDialog;
import org.pentaho.di.ui.core.dialog.ErrorDialog;
import org.pentaho.di.ui.core.dialog.PreviewRowsDialog;
import org.pentaho.di.ui.core.widget.ColumnInfo;
import org.pentaho.di.ui.core.widget.TableView;
import org.pentaho.di.ui.core.widget.TextVar;
import org.pentaho.di.ui.trans.dialog.TransPreviewProgressDialog;
import org.pentaho.di.ui.trans.step.BaseStepDialog;

public class YamlInputDialog extends BaseStepDialog implements StepDialogInterface {
    private static Class<?> PKG = YamlInputMeta.class; // for i18n purposes, needed by Translator2!!

    private CTabFolder wTabFolder;
    private FormData fdTabFolder;

    private CTabItem wFileTab, wContentTab, wFieldsTab;

    private Composite wFileComp, wContentComp, wFieldsComp;
    private FormData fdFileComp, fdContentComp, fdFieldsComp;

    private Label wlFilename, wlYamlIsAFile;
    private Button wbbFilename; // Browse: add file or directory
    private Button wbdFilename; // Delete
    private Button wbeFilename; // Edit
    private Button wbaFilename; // Add or change
    private TextVar wFilename;
    private FormData fdlFilename, fdbFilename, fdbdFilename, fdbeFilename, fdbaFilename, fdFilename;

    private Label wlFilenameList;
    private TableView wFilenameList;
    private FormData fdlFilenameList, fdFilenameList;

    private Label wlFilemask;
    private TextVar wFilemask;
    private FormData fdlFilemask, fdFilemask;

    private Button wbShowFiles;
    private FormData fdbShowFiles;

    private FormData fdlXMLField, fdlXMLStreamField, fdlXMLIsAFile;
    private FormData fdXMLField, fdYAMLStreamField;
    private FormData fdOutputField, fdYAMLIsAFile, fdAdditionalFields, fdAddFileResult, fdXmlConf;
    private Label wlYamlField, wlXmlStreamField;
    private CCombo wYAMLLField;
    private Button wYAMLStreamField, wYAMLIsAFile;

    private Label wlInclFilename;
    private Button wInclFilename, wAddResult;
    private FormData fdlInclFilename, fdInclFilename, fdAddResult, fdlAddResult;

    private Label wlInclFilenameField;
    private TextVar wInclFilenameField;
    private FormData fdlInclFilenameField, fdInclFilenameField;

    private Label wlInclRownum, wlAddResult;
    private Button wInclRownum;
    private FormData fdlInclRownum, fdRownum;

    private Label wlInclRownumField;
    private TextVar wInclRownumField;
    private FormData fdlInclRownumField, fdInclRownumField;

    private Label wlLimit;
    private Text wLimit;
    private FormData fdlLimit, fdLimit;

    private TableView wFields;
    private FormData fdFields;

    private Group wOutputField;
    private Group wAdditionalFields;
    private Group wAddFileResult;
    private Group wXmlConf;

    // ignore empty files flag
    private Label wlIgnoreEmptyFile;
    private Button wIgnoreEmptyFile;
    private FormData fdlIgnoreEmptyFile, fdIgnoreEmptyFile;

    // do not fail if no files?
    private Label wldoNotFailIfNoFile;
    private Button wdoNotFailIfNoFile;
    private FormData fdldoNotFailIfNoFile, fddoNotFailIfNoFile;

    private YamlInputMeta input;

    public static final int[] dateLengths = new int[] { 23, 19, 14, 10, 10, 10, 10, 8, 8, 8, 8, 6, 6 };

    ArrayList<String> listpath = new ArrayList<String>();
    String precNodeName = null;

    public YamlInputDialog( Shell parent, Object in, TransMeta transMeta, String sname ) {
        super( parent, (BaseStepMeta) in, transMeta, sname );
        input = (YamlInputMeta) in;
    }

    public String open() {
        Shell parent = getParent();
        Display display = parent.getDisplay();

        shell = new Shell( parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MAX | SWT.MIN );
        props.setLook( shell );
        setShellImage( shell, input );

        ModifyListener lsMod = new ModifyListener() {
            public void modifyText( ModifyEvent e ) {
                input.setChanged();
            }
        };
        changed = input.hasChanged();

        FormLayout formLayout = new FormLayout();
        formLayout.marginWidth = Const.FORM_MARGIN;
        formLayout.marginHeight = Const.FORM_MARGIN;

        shell.setLayout( formLayout );
        shell.setText( BaseMessages.getString(PKG, "YamlInputDialog.DialogTitle") );

        int middle = props.getMiddlePct();
        int margin = Const.MARGIN;

        // Stepname line
        wlStepname = new Label( shell, SWT.RIGHT );
        wlStepname.setText( BaseMessages.getString( PKG, "System.Label.StepName" ) );
        props.setLook( wlStepname );
        fdlStepname = new FormData();
        fdlStepname.left = new FormAttachment( 0, 0 );
        fdlStepname.top = new FormAttachment( 0, margin );
        fdlStepname.right = new FormAttachment( middle, -margin );
        wlStepname.setLayoutData( fdlStepname );
        wStepname = new Text( shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        wStepname.setText( stepname );
        props.setLook( wStepname );
        wStepname.addModifyListener( lsMod );
        fdStepname = new FormData();
        fdStepname.left = new FormAttachment( middle, 0 );
        fdStepname.top = new FormAttachment( 0, margin );
        fdStepname.right = new FormAttachment( 100, 0 );
        wStepname.setLayoutData( fdStepname );

        wTabFolder = new CTabFolder( shell, SWT.BORDER );
        props.setLook( wTabFolder, Props.WIDGET_STYLE_TAB );

        // ////////////////////////
        // START OF FILE TAB ///
        // ////////////////////////
        wFileTab = new CTabItem( wTabFolder, SWT.NONE );
        wFileTab.setText( BaseMessages.getString( PKG, "YamlInputDialog.File.Tab" ) );

        wFileComp = new Composite( wTabFolder, SWT.NONE );
        props.setLook( wFileComp );

        FormLayout fileLayout = new FormLayout();
        fileLayout.marginWidth = 3;
        fileLayout.marginHeight = 3;
        wFileComp.setLayout( fileLayout );

        // ///////////////////////////////
        // START OF Output Field GROUP //
        // ///////////////////////////////

        wOutputField = new Group( wFileComp, SWT.SHADOW_NONE );
        props.setLook( wOutputField );
        wOutputField.setText( BaseMessages.getString( PKG, "YamlInputDialog.wOutputField.Label" ) );

        FormLayout outputfieldgroupLayout = new FormLayout();
        outputfieldgroupLayout.marginWidth = 10;
        outputfieldgroupLayout.marginHeight = 10;
        wOutputField.setLayout( outputfieldgroupLayout );

        // Is XML string defined in a Field
        wlXmlStreamField = new Label( wOutputField, SWT.RIGHT );
        wlXmlStreamField.setText( BaseMessages.getString( PKG, "YamlInputDialog.wlXmlStreamField.Label" ) );
        props.setLook( wlXmlStreamField );
        fdlXMLStreamField = new FormData();
        fdlXMLStreamField.left = new FormAttachment( 0, -margin );
        fdlXMLStreamField.top = new FormAttachment( 0, margin );
        fdlXMLStreamField.right = new FormAttachment( middle, -2 * margin );
        wlXmlStreamField.setLayoutData( fdlXMLStreamField );

        wYAMLStreamField = new Button( wOutputField, SWT.CHECK );
        props.setLook( wYAMLStreamField );
        wYAMLStreamField.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.wYAMLStreamField.Tooltip" ) );
        fdYAMLStreamField = new FormData();
        fdYAMLStreamField.left = new FormAttachment( middle, -margin );
        fdYAMLStreamField.top = new FormAttachment( 0, margin );
        wYAMLStreamField.setLayoutData( fdYAMLStreamField );
        SelectionAdapter lsyamlstream = new SelectionAdapter() {
            public void widgetSelected( SelectionEvent arg0 ) {
                ActiveStreamField();
                input.setChanged();
            }
        };
        wYAMLStreamField.addSelectionListener( lsyamlstream );

        // Is XML source is a file?
        wlYamlIsAFile = new Label( wOutputField, SWT.RIGHT );
        wlYamlIsAFile.setText( BaseMessages.getString( PKG, "YamlInputDialog.XMLIsAFile.Label" ) );
        props.setLook( wlYamlIsAFile );
        fdlXMLIsAFile = new FormData();
        fdlXMLIsAFile.left = new FormAttachment( 0, -margin );
        fdlXMLIsAFile.top = new FormAttachment( wYAMLStreamField, margin );
        fdlXMLIsAFile.right = new FormAttachment( middle, -2 * margin );
        wlYamlIsAFile.setLayoutData( fdlXMLIsAFile );

        wYAMLIsAFile = new Button( wOutputField, SWT.CHECK );
        props.setLook( wYAMLIsAFile );
        wYAMLIsAFile.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.XMLIsAFile.Tooltip" ) );
        fdYAMLIsAFile = new FormData();
        fdYAMLIsAFile.left = new FormAttachment( middle, -margin );
        fdYAMLIsAFile.top = new FormAttachment( wYAMLStreamField, margin );
        wYAMLIsAFile.setLayoutData( fdYAMLIsAFile );
        SelectionAdapter lsyamlisafile = new SelectionAdapter() {
            public void widgetSelected( SelectionEvent arg0 ) {
                input.setChanged();
                enableFileSettings();
            }
        };
        wYAMLIsAFile.addSelectionListener( lsyamlisafile );

        // If XML string defined in a Field
        wlYamlField = new Label( wOutputField, SWT.RIGHT );
        wlYamlField.setText( BaseMessages.getString( PKG, "YamlInputDialog.wlYamlField.Label" ) );
        props.setLook( wlYamlField );
        fdlXMLField = new FormData();
        fdlXMLField.left = new FormAttachment( 0, -margin );
        fdlXMLField.top = new FormAttachment( wYAMLIsAFile, margin );
        fdlXMLField.right = new FormAttachment( middle, -2 * margin );
        wlYamlField.setLayoutData( fdlXMLField );

        wYAMLLField = new CCombo( wOutputField, SWT.BORDER | SWT.READ_ONLY );
        wYAMLLField.setEditable( true );
        props.setLook( wYAMLLField );
        wYAMLLField.addModifyListener( lsMod );
        fdXMLField = new FormData();
        fdXMLField.left = new FormAttachment( middle, -margin );
        fdXMLField.top = new FormAttachment( wYAMLIsAFile, margin );
        fdXMLField.right = new FormAttachment( 100, -margin );
        wYAMLLField.setLayoutData( fdXMLField );
        wYAMLLField.addFocusListener( new FocusListener() {
            public void focusLost( org.eclipse.swt.events.FocusEvent e ) {
            }

            public void focusGained( org.eclipse.swt.events.FocusEvent e ) {
                Cursor busy = new Cursor( shell.getDisplay(), SWT.CURSOR_WAIT );
                shell.setCursor( busy );
                setXMLStreamField();
                shell.setCursor( null );
                busy.dispose();
            }
        } );

        fdOutputField = new FormData();
        fdOutputField.left = new FormAttachment( 0, margin );
        fdOutputField.top = new FormAttachment( wFilenameList, margin );
        fdOutputField.right = new FormAttachment( 100, -margin );
        wOutputField.setLayoutData( fdOutputField );

        // ///////////////////////////////////////////////////////////
        // / END OF Output Field GROUP
        // ///////////////////////////////////////////////////////////

        // Filename line
        wlFilename = new Label( wFileComp, SWT.RIGHT );
        wlFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.Filename.Label" ) );
        props.setLook( wlFilename );
        fdlFilename = new FormData();
        fdlFilename.left = new FormAttachment( 0, 0 );
        fdlFilename.top = new FormAttachment( wOutputField, margin );
        fdlFilename.right = new FormAttachment( middle, -margin );
        wlFilename.setLayoutData( fdlFilename );

        wbbFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
        props.setLook( wbbFilename );
        wbbFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameBrowse.Button" ) );
        wbbFilename.setToolTipText( BaseMessages.getString( PKG, "System.Tooltip.BrowseForFileOrDirAndAdd" ) );
        fdbFilename = new FormData();
        fdbFilename.right = new FormAttachment( 100, 0 );
        fdbFilename.top = new FormAttachment( wOutputField, margin );
        wbbFilename.setLayoutData( fdbFilename );

        wbaFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
        props.setLook( wbaFilename );
        wbaFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameAdd.Button" ) );
        wbaFilename.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameAdd.Tooltip" ) );
        fdbaFilename = new FormData();
        fdbaFilename.right = new FormAttachment( wbbFilename, -margin );
        fdbaFilename.top = new FormAttachment( wOutputField, margin );
        wbaFilename.setLayoutData( fdbaFilename );

        wFilename = new TextVar( transMeta, wFileComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        props.setLook( wFilename );
        wFilename.addModifyListener( lsMod );
        fdFilename = new FormData();
        fdFilename.left = new FormAttachment( middle, 0 );
        fdFilename.right = new FormAttachment( wbaFilename, -margin );
        fdFilename.top = new FormAttachment( wOutputField, margin );
        wFilename.setLayoutData( fdFilename );

        wlFilemask = new Label( wFileComp, SWT.RIGHT );
        wlFilemask.setText( BaseMessages.getString( PKG, "YamlInputDialog.RegExp.Label" ) );
        props.setLook( wlFilemask );
        fdlFilemask = new FormData();
        fdlFilemask.left = new FormAttachment( 0, 0 );
        fdlFilemask.top = new FormAttachment( wFilename, margin );
        fdlFilemask.right = new FormAttachment( middle, -margin );
        wlFilemask.setLayoutData( fdlFilemask );
        wFilemask = new TextVar( transMeta, wFileComp, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        props.setLook( wFilemask );
        wFilemask.addModifyListener( lsMod );
        fdFilemask = new FormData();
        fdFilemask.left = new FormAttachment( middle, 0 );
        fdFilemask.top = new FormAttachment( wFilename, margin );
        fdFilemask.right = new FormAttachment( 100, 0 );
        wFilemask.setLayoutData( fdFilemask );

        // Filename list line
        wlFilenameList = new Label( wFileComp, SWT.RIGHT );
        wlFilenameList.setText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameList.Label" ) );
        props.setLook( wlFilenameList );
        fdlFilenameList = new FormData();
        fdlFilenameList.left = new FormAttachment( 0, 0 );
        fdlFilenameList.top = new FormAttachment( wFilemask, margin );
        fdlFilenameList.right = new FormAttachment( middle, -margin );
        wlFilenameList.setLayoutData( fdlFilenameList );

        // Buttons to the right of the screen...
        wbdFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
        props.setLook( wbdFilename );
        wbdFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameRemove.Button" ) );
        wbdFilename.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameRemove.Tooltip" ) );
        fdbdFilename = new FormData();
        fdbdFilename.right = new FormAttachment( 100, 0 );
        fdbdFilename.top = new FormAttachment( wFilemask, 40 );
        wbdFilename.setLayoutData( fdbdFilename );

        wbeFilename = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
        props.setLook( wbeFilename );
        wbeFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameEdit.Button" ) );
        wbeFilename.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.FilenameEdit.Tooltip" ) );
        fdbeFilename = new FormData();
        fdbeFilename.right = new FormAttachment( 100, 0 );
        fdbeFilename.left = new FormAttachment( wbdFilename, 0, SWT.LEFT );
        fdbeFilename.top = new FormAttachment( wbdFilename, margin );
        wbeFilename.setLayoutData( fdbeFilename );

        wbShowFiles = new Button( wFileComp, SWT.PUSH | SWT.CENTER );
        props.setLook( wbShowFiles );
        wbShowFiles.setText( BaseMessages.getString( PKG, "YamlInputDialog.ShowFiles.Button" ) );
        fdbShowFiles = new FormData();
        fdbShowFiles.left = new FormAttachment( middle, 0 );
        fdbShowFiles.bottom = new FormAttachment( 100, 0 );
        wbShowFiles.setLayoutData( fdbShowFiles );

        ColumnInfo[] colinfo = new ColumnInfo[4];
        colinfo[0] =
                new ColumnInfo(
                        BaseMessages.getString( PKG, "YamlInputDialog.Files.Filename.Column" ), ColumnInfo.COLUMN_TYPE_TEXT,
                        false );
        colinfo[1] =
                new ColumnInfo(
                        BaseMessages.getString( PKG, "YamlInputDialog.Files.Wildcard.Column" ), ColumnInfo.COLUMN_TYPE_TEXT,
                        false );

        colinfo[0].setUsingVariables( true );
        colinfo[1].setUsingVariables( true );
        colinfo[1].setToolTip( BaseMessages.getString( PKG, "YamlInputDialog.Files.Wildcard.Tooltip" ) );
        colinfo[2] =
                new ColumnInfo(
                        BaseMessages.getString( PKG, "YamlInputDialog.Required.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
                        YamlInputMeta.RequiredFilesDesc );
        colinfo[2].setToolTip( BaseMessages.getString( PKG, "YamlInputDialog.Required.Tooltip" ) );
        colinfo[3] =
                new ColumnInfo(
                        BaseMessages.getString( PKG, "YamlInputDialog.IncludeSubDirs.Column" ), ColumnInfo.COLUMN_TYPE_CCOMBO,
                        YamlInputMeta.RequiredFilesDesc );
        colinfo[3].setToolTip( BaseMessages.getString( PKG, "YamlInputDialog.IncludeSubDirs.Tooltip" ) );

        wFilenameList =
                new TableView(
                        transMeta, wFileComp, SWT.FULL_SELECTION | SWT.SINGLE | SWT.BORDER, colinfo, 2, lsMod, props );
        props.setLook( wFilenameList );
        fdFilenameList = new FormData();
        fdFilenameList.left = new FormAttachment( middle, 0 );
        fdFilenameList.right = new FormAttachment( wbdFilename, -margin );
        fdFilenameList.top = new FormAttachment( wFilemask, margin );
        fdFilenameList.bottom = new FormAttachment( wbShowFiles, -margin );
        wFilenameList.setLayoutData( fdFilenameList );

        fdFileComp = new FormData();
        fdFileComp.left = new FormAttachment( 0, 0 );
        fdFileComp.top = new FormAttachment( 0, 0 );
        fdFileComp.right = new FormAttachment( 100, 0 );
        fdFileComp.bottom = new FormAttachment( 100, 0 );
        wFileComp.setLayoutData( fdFileComp );

        wFileComp.layout();
        wFileTab.setControl( wFileComp );

        // ///////////////////////////////////////////////////////////
        // / END OF FILE TAB
        // ///////////////////////////////////////////////////////////

        // ////////////////////////
        // START OF CONTENT TAB///
        // /
        wContentTab = new CTabItem( wTabFolder, SWT.NONE );
        wContentTab.setText( BaseMessages.getString( PKG, "YamlInputDialog.Content.Tab" ) );

        FormLayout contentLayout = new FormLayout();
        contentLayout.marginWidth = 3;
        contentLayout.marginHeight = 3;

        wContentComp = new Composite( wTabFolder, SWT.NONE );
        props.setLook( wContentComp );
        wContentComp.setLayout( contentLayout );

        // ///////////////////////////////
        // START OF XmlConf Field GROUP //
        // ///////////////////////////////

        wXmlConf = new Group( wContentComp, SWT.SHADOW_NONE );
        props.setLook( wXmlConf );
        wXmlConf.setText( BaseMessages.getString( PKG, "YamlInputDialog.wXmlConf.Label" ) );

        FormLayout XmlConfgroupLayout = new FormLayout();
        XmlConfgroupLayout.marginWidth = 10;
        XmlConfgroupLayout.marginHeight = 10;
        wXmlConf.setLayout( XmlConfgroupLayout );

        // Ignore Empty File
        wlIgnoreEmptyFile = new Label( wXmlConf, SWT.RIGHT );
        wlIgnoreEmptyFile.setText( BaseMessages.getString( PKG, "YamlInputDialog.IgnoreEmptyFile.Label" ) );
        props.setLook( wlIgnoreEmptyFile );
        fdlIgnoreEmptyFile = new FormData();
        fdlIgnoreEmptyFile.left = new FormAttachment( 0, 0 );
        fdlIgnoreEmptyFile.top = new FormAttachment( 0, margin );
        fdlIgnoreEmptyFile.right = new FormAttachment( middle, -margin );
        wlIgnoreEmptyFile.setLayoutData( fdlIgnoreEmptyFile );
        wIgnoreEmptyFile = new Button( wXmlConf, SWT.CHECK );
        props.setLook( wIgnoreEmptyFile );
        wIgnoreEmptyFile.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.IgnoreEmptyFile.Tooltip" ) );
        fdIgnoreEmptyFile = new FormData();
        fdIgnoreEmptyFile.left = new FormAttachment( middle, 0 );
        fdIgnoreEmptyFile.top = new FormAttachment( 0, margin );
        wIgnoreEmptyFile.setLayoutData( fdIgnoreEmptyFile );

        // do not fail if no files?
        wldoNotFailIfNoFile = new Label( wXmlConf, SWT.RIGHT );
        wldoNotFailIfNoFile.setText( BaseMessages.getString( PKG, "YamlInputDialog.doNotFailIfNoFile.Label" ) );
        props.setLook( wldoNotFailIfNoFile );
        fdldoNotFailIfNoFile = new FormData();
        fdldoNotFailIfNoFile.left = new FormAttachment( 0, 0 );
        fdldoNotFailIfNoFile.top = new FormAttachment( wIgnoreEmptyFile, margin );
        fdldoNotFailIfNoFile.right = new FormAttachment( middle, -margin );
        wldoNotFailIfNoFile.setLayoutData( fdldoNotFailIfNoFile );
        wdoNotFailIfNoFile = new Button( wXmlConf, SWT.CHECK );
        props.setLook( wdoNotFailIfNoFile );
        wdoNotFailIfNoFile.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.doNotFailIfNoFile.Tooltip" ) );
        fddoNotFailIfNoFile = new FormData();
        fddoNotFailIfNoFile.left = new FormAttachment( middle, 0 );
        fddoNotFailIfNoFile.top = new FormAttachment( wIgnoreEmptyFile, margin );
        wdoNotFailIfNoFile.setLayoutData( fddoNotFailIfNoFile );

        wlLimit = new Label( wXmlConf, SWT.RIGHT );
        wlLimit.setText( BaseMessages.getString( PKG, "YamlInputDialog.Limit.Label" ) );
        props.setLook( wlLimit );
        fdlLimit = new FormData();
        fdlLimit.left = new FormAttachment( 0, 0 );
        fdlLimit.top = new FormAttachment( wdoNotFailIfNoFile, margin );
        fdlLimit.right = new FormAttachment( middle, -margin );
        wlLimit.setLayoutData( fdlLimit );
        wLimit = new Text( wXmlConf, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        props.setLook( wLimit );
        wLimit.addModifyListener( lsMod );
        fdLimit = new FormData();
        fdLimit.left = new FormAttachment( middle, 0 );
        fdLimit.top = new FormAttachment( wdoNotFailIfNoFile, margin );
        fdLimit.right = new FormAttachment( 100, 0 );
        wLimit.setLayoutData( fdLimit );

        fdXmlConf = new FormData();
        fdXmlConf.left = new FormAttachment( 0, margin );
        fdXmlConf.top = new FormAttachment( 0, margin );
        fdXmlConf.right = new FormAttachment( 100, -margin );
        wXmlConf.setLayoutData( fdXmlConf );

        // ///////////////////////////////////////////////////////////
        // / END OF XmlConf Field GROUP
        // ///////////////////////////////////////////////////////////

        // ///////////////////////////////
        // START OF Additional Fields GROUP //
        // ///////////////////////////////

        wAdditionalFields = new Group( wContentComp, SWT.SHADOW_NONE );
        props.setLook( wAdditionalFields );
        wAdditionalFields.setText( BaseMessages.getString( PKG, "YamlInputDialog.wAdditionalFields.Label" ) );

        FormLayout AdditionalFieldsgroupLayout = new FormLayout();
        AdditionalFieldsgroupLayout.marginWidth = 10;
        AdditionalFieldsgroupLayout.marginHeight = 10;
        wAdditionalFields.setLayout( AdditionalFieldsgroupLayout );

        wlInclFilename = new Label( wAdditionalFields, SWT.RIGHT );
        wlInclFilename.setText( BaseMessages.getString( PKG, "YamlInputDialog.InclFilename.Label" ) );
        props.setLook( wlInclFilename );
        fdlInclFilename = new FormData();
        fdlInclFilename.left = new FormAttachment( 0, 0 );
        fdlInclFilename.top = new FormAttachment( wXmlConf, 4 * margin );
        fdlInclFilename.right = new FormAttachment( middle, -margin );
        wlInclFilename.setLayoutData( fdlInclFilename );
        wInclFilename = new Button( wAdditionalFields, SWT.CHECK );
        props.setLook( wInclFilename );
        wInclFilename.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.InclFilename.Tooltip" ) );
        fdInclFilename = new FormData();
        fdInclFilename.left = new FormAttachment( middle, 0 );
        fdInclFilename.top = new FormAttachment( wXmlConf, 4 * margin );
        wInclFilename.setLayoutData( fdInclFilename );

        wlInclFilenameField = new Label( wAdditionalFields, SWT.LEFT );
        wlInclFilenameField.setText( BaseMessages.getString( PKG, "YamlInputDialog.InclFilenameField.Label" ) );
        props.setLook( wlInclFilenameField );
        fdlInclFilenameField = new FormData();
        fdlInclFilenameField.left = new FormAttachment( wInclFilename, margin );
        fdlInclFilenameField.top = new FormAttachment( wLimit, 4 * margin );
        wlInclFilenameField.setLayoutData( fdlInclFilenameField );
        wInclFilenameField = new TextVar( transMeta, wAdditionalFields, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        props.setLook( wInclFilenameField );
        wInclFilenameField.addModifyListener( lsMod );
        fdInclFilenameField = new FormData();
        fdInclFilenameField.left = new FormAttachment( wlInclFilenameField, margin );
        fdInclFilenameField.top = new FormAttachment( wLimit, 4 * margin );
        fdInclFilenameField.right = new FormAttachment( 100, 0 );
        wInclFilenameField.setLayoutData( fdInclFilenameField );

        wlInclRownum = new Label( wAdditionalFields, SWT.RIGHT );
        wlInclRownum.setText( BaseMessages.getString( PKG, "YamlInputDialog.InclRownum.Label" ) );
        props.setLook( wlInclRownum );
        fdlInclRownum = new FormData();
        fdlInclRownum.left = new FormAttachment( 0, 0 );
        fdlInclRownum.top = new FormAttachment( wInclFilenameField, margin );
        fdlInclRownum.right = new FormAttachment( middle, -margin );
        wlInclRownum.setLayoutData( fdlInclRownum );
        wInclRownum = new Button( wAdditionalFields, SWT.CHECK );
        props.setLook( wInclRownum );
        wInclRownum.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.InclRownum.Tooltip" ) );
        fdRownum = new FormData();
        fdRownum.left = new FormAttachment( middle, 0 );
        fdRownum.top = new FormAttachment( wInclFilenameField, margin );
        wInclRownum.setLayoutData( fdRownum );

        wlInclRownumField = new Label( wAdditionalFields, SWT.RIGHT );
        wlInclRownumField.setText( BaseMessages.getString( PKG, "YamlInputDialog.InclRownumField.Label" ) );
        props.setLook( wlInclRownumField );
        fdlInclRownumField = new FormData();
        fdlInclRownumField.left = new FormAttachment( wInclRownum, margin );
        fdlInclRownumField.top = new FormAttachment( wInclFilenameField, margin );
        wlInclRownumField.setLayoutData( fdlInclRownumField );
        wInclRownumField = new TextVar( transMeta, wAdditionalFields, SWT.SINGLE | SWT.LEFT | SWT.BORDER );
        props.setLook( wInclRownumField );
        wInclRownumField.addModifyListener( lsMod );
        fdInclRownumField = new FormData();
        fdInclRownumField.left = new FormAttachment( wlInclRownumField, margin );
        fdInclRownumField.top = new FormAttachment( wInclFilenameField, margin );
        fdInclRownumField.right = new FormAttachment( 100, 0 );
        wInclRownumField.setLayoutData( fdInclRownumField );

        fdAdditionalFields = new FormData();
        fdAdditionalFields.left = new FormAttachment( 0, margin );
        fdAdditionalFields.top = new FormAttachment( wXmlConf, margin );
        fdAdditionalFields.right = new FormAttachment( 100, -margin );
        wAdditionalFields.setLayoutData( fdAdditionalFields );

        // ///////////////////////////////////////////////////////////
        // / END OF Additional Fields GROUP
        // ///////////////////////////////////////////////////////////

        // ///////////////////////////////
        // START OF AddFileResult GROUP //
        // ///////////////////////////////

        wAddFileResult = new Group( wContentComp, SWT.SHADOW_NONE );
        props.setLook( wAddFileResult );
        wAddFileResult.setText( BaseMessages.getString( PKG, "YamlInputDialog.wAddFileResult.Label" ) );

        FormLayout AddFileResultgroupLayout = new FormLayout();
        AddFileResultgroupLayout.marginWidth = 10;
        AddFileResultgroupLayout.marginHeight = 10;
        wAddFileResult.setLayout( AddFileResultgroupLayout );

        wlAddResult = new Label( wAddFileResult, SWT.RIGHT );
        wlAddResult.setText( BaseMessages.getString( PKG, "YamlInputDialog.AddResult.Label" ) );
        props.setLook( wlAddResult );
        fdlAddResult = new FormData();
        fdlAddResult.left = new FormAttachment( 0, 0 );
        fdlAddResult.top = new FormAttachment( wAdditionalFields, margin );
        fdlAddResult.right = new FormAttachment( middle, -margin );
        wlAddResult.setLayoutData( fdlAddResult );
        wAddResult = new Button( wAddFileResult, SWT.CHECK );
        props.setLook( wAddResult );
        wAddResult.setToolTipText( BaseMessages.getString( PKG, "YamlInputDialog.AddResult.Tooltip" ) );
        fdAddResult = new FormData();
        fdAddResult.left = new FormAttachment( middle, 0 );
        fdAddResult.top = new FormAttachment( wAdditionalFields, margin );
        wAddResult.setLayoutData( fdAddResult );

        fdAddFileResult = new FormData();
        fdAddFileResult.left = new FormAttachment( 0, margin );
        fdAddFileResult.top = new FormAttachment( wAdditionalFields, margin );
        fdAddFileResult.right = new FormAttachment( 100, -margin );
        wAddFileResult.setLayoutData( fdAddFileResult );

        // ///////////////////////////////////////////////////////////
        // / END OF AddFileResult GROUP
        // ///////////////////////////////////////////////////////////

        fdContentComp = new FormData();
        fdContentComp.left = new FormAttachment( 0, 0 );
        fdContentComp.top = new FormAttachment( 0, 0 );
        fdContentComp.right = new FormAttachment( 100, 0 );
        fdContentComp.bottom = new FormAttachment( 100, 0 );
        wContentComp.setLayoutData( fdContentComp );

        wContentComp.layout();
        wContentTab.setControl( wContentComp );

        // ///////////////////////////////////////////////////////////
        // / END OF CONTENT TAB
        // ///////////////////////////////////////////////////////////

        // Fields tab...
        //
        wFieldsTab = new CTabItem( wTabFolder, SWT.NONE );
        wFieldsTab.setText( BaseMessages.getString( PKG, "YamlInputDialog.Fields.Tab" ) );

        FormLayout fieldsLayout = new FormLayout();
        fieldsLayout.marginWidth = Const.FORM_MARGIN;
        fieldsLayout.marginHeight = Const.FORM_MARGIN;

        wFieldsComp = new Composite( wTabFolder, SWT.NONE );
        wFieldsComp.setLayout( fieldsLayout );
        props.setLook( wFieldsComp );

        wGet = new Button( wFieldsComp, SWT.PUSH );
        wGet.setText( BaseMessages.getString( PKG, "YamlInputDialog.GetFields.Button" ) );
        fdGet = new FormData();
        fdGet.left = new FormAttachment( 50, 0 );
        fdGet.bottom = new FormAttachment( 100, 0 );
        wGet.setLayoutData( fdGet );

        final int FieldsRows = input.getInputFields().length;

        ColumnInfo[] colinf =
                new ColumnInfo[] {
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Name.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.XPath.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Type.Column" ),
                                ColumnInfo.COLUMN_TYPE_CCOMBO, ValueMeta.getTypes(), true ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Format.Column" ),
                                ColumnInfo.COLUMN_TYPE_FORMAT, 4 ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Length.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Precision.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Currency.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Decimal.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Group.Column" ),
                                ColumnInfo.COLUMN_TYPE_TEXT, false ),
                        new ColumnInfo(
                                BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.TrimType.Column" ),
                                ColumnInfo.COLUMN_TYPE_CCOMBO, YamlInputField.trimTypeDesc, true ) };

        colinf[0].setUsingVariables( true );
        colinf[0].setToolTip( BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.Name.Column.Tooltip" ) );
        colinf[1].setUsingVariables( true );
        colinf[1].setToolTip( BaseMessages.getString( PKG, "YamlInputDialog.FieldsTable.XPath.Column.Tooltip" ) );

        wFields =
                new TableView( transMeta, wFieldsComp, SWT.FULL_SELECTION | SWT.MULTI, colinf, FieldsRows, lsMod, props );

        fdFields = new FormData();
        fdFields.left = new FormAttachment( 0, 0 );
        fdFields.top = new FormAttachment( 0, 0 );
        fdFields.right = new FormAttachment( 100, 0 );
        fdFields.bottom = new FormAttachment( wGet, -margin );
        wFields.setLayoutData( fdFields );

        fdFieldsComp = new FormData();
        fdFieldsComp.left = new FormAttachment( 0, 0 );
        fdFieldsComp.top = new FormAttachment( 0, 0 );
        fdFieldsComp.right = new FormAttachment( 100, 0 );
        fdFieldsComp.bottom = new FormAttachment( 100, 0 );
        wFieldsComp.setLayoutData( fdFieldsComp );

        wFieldsComp.layout();
        wFieldsTab.setControl( wFieldsComp );

        fdTabFolder = new FormData();
        fdTabFolder.left = new FormAttachment( 0, 0 );
        fdTabFolder.top = new FormAttachment( wStepname, margin );
        fdTabFolder.right = new FormAttachment( 100, 0 );
        fdTabFolder.bottom = new FormAttachment( 100, -50 );
        wTabFolder.setLayoutData( fdTabFolder );

        wOK = new Button( shell, SWT.PUSH );
        wOK.setText( BaseMessages.getString( PKG, "System.Button.OK" ) );

        wPreview = new Button( shell, SWT.PUSH );
        wPreview.setText( BaseMessages.getString( PKG, "YamlInputDialog.Button.PreviewRows" ) );

        wCancel = new Button( shell, SWT.PUSH );
        wCancel.setText( BaseMessages.getString( PKG, "System.Button.Cancel" ) );

        setButtonPositions( new Button[] { wOK, wPreview, wCancel }, margin, wTabFolder );

        // Add listeners
        lsOK = new Listener() {
            public void handleEvent( Event e ) {
                ok();
            }
        };
        lsGet = new Listener() {
            public void handleEvent( Event e ) {
                get();
            }
        };
        lsPreview = new Listener() {
            public void handleEvent( Event e ) {
                preview();
            }
        };
        lsCancel = new Listener() {
            public void handleEvent( Event e ) {
                cancel();
            }
        };

        wOK.addListener( SWT.Selection, lsOK );
        wGet.addListener( SWT.Selection, lsGet );
        wPreview.addListener( SWT.Selection, lsPreview );
        wCancel.addListener( SWT.Selection, lsCancel );

        lsDef = new SelectionAdapter() {
            public void widgetDefaultSelected( SelectionEvent e ) {
                ok();
            }
        };

        wStepname.addSelectionListener( lsDef );
        wLimit.addSelectionListener( lsDef );
        wInclRownumField.addSelectionListener( lsDef );
        wInclFilenameField.addSelectionListener( lsDef );

        // Add the file to the list of files...
        SelectionAdapter selA = new SelectionAdapter() {
            public void widgetSelected( SelectionEvent arg0 ) {
                wFilenameList.add( new String[] { wFilename.getText(), wFilemask.getText() } );
                wFilename.setText( "" );
                wFilemask.setText( "" );
                wFilenameList.removeEmptyRows();
                wFilenameList.setRowNums();
                wFilenameList.optWidth( true );
            }
        };
        wbaFilename.addSelectionListener( selA );
        wFilename.addSelectionListener( selA );

        // Delete files from the list of files...
        wbdFilename.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent arg0 ) {
                int[] idx = wFilenameList.getSelectionIndices();
                wFilenameList.remove( idx );
                wFilenameList.removeEmptyRows();
                wFilenameList.setRowNums();
            }
        } );

        // Edit the selected file & remove from the list...
        wbeFilename.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent arg0 ) {
                int idx = wFilenameList.getSelectionIndex();
                if ( idx >= 0 ) {
                    String[] string = wFilenameList.getItem( idx );
                    wFilename.setText( string[0] );
                    wFilemask.setText( string[1] );
                    wFilenameList.remove( idx );
                }
                wFilenameList.removeEmptyRows();
                wFilenameList.setRowNums();
            }
        } );

        // Show the files that are selected at this time...
        wbShowFiles.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent e ) {
                try {
                    YamlInputMeta tfii = new YamlInputMeta();
                    getInfo( tfii );
                    FileInputList fileInputList = tfii.getFiles( transMeta );
                    String[] files = fileInputList.getFileStrings();
                    if ( files != null && files.length > 0 ) {
                        EnterSelectionDialog esd = new EnterSelectionDialog( shell, files,
                                BaseMessages.getString( PKG, "YamlInputDialog.FilesReadSelection.DialogTitle" ),
                                BaseMessages.getString( PKG, "YamlInputDialog.FilesReadSelection.DialogMessage" ) );
                        esd.setViewOnly();
                        esd.open();
                    } else {
                        MessageBox mb = new MessageBox( shell, SWT.OK | SWT.ICON_ERROR );
                        mb.setMessage( BaseMessages.getString( PKG, "YamlInputDialog.NoFileFound.DialogMessage" ) );
                        mb.setText( BaseMessages.getString( PKG, "System.Dialog.Error.Title" ) );
                        mb.open();
                    }
                } catch ( KettleException ex ) {
                    new ErrorDialog(
                            shell, BaseMessages.getString( PKG, "YamlInputDialog.ErrorParsingData.DialogTitle" ), BaseMessages
                            .getString( PKG, "YamlInputDialog.ErrorParsingData.DialogMessage" ), ex );
                }
            }
        } );
        // Enable/disable the right fields to allow a filename to be added to each row...
        wInclFilename.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent e ) {
                setIncludeFilename();
            }
        } );

        // Enable/disable the right fields to allow a row number to be added to each row...
        wInclRownum.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent e ) {
                setIncludeRownum();
            }
        } );

        // Whenever something changes, set the tooltip to the expanded version of the filename:
        wFilename.addModifyListener( new ModifyListener() {
            public void modifyText( ModifyEvent e ) {
                wFilename.setToolTipText( wFilename.getText() );
            }
        } );

        // Listen to the Browse... button
        wbbFilename.addSelectionListener( new SelectionAdapter() {
            public void widgetSelected( SelectionEvent e ) {
                if ( wFilemask.getText() != null && wFilemask.getText().length() > 0 ) // A mask: a directory!
                {
                    DirectoryDialog dialog = new DirectoryDialog( shell, SWT.OPEN );
                    if ( wFilename.getText() != null ) {
                        String fpath = transMeta.environmentSubstitute( wFilename.getText() );
                        dialog.setFilterPath( fpath );
                    }

                    if ( dialog.open() != null ) {
                        String str = dialog.getFilterPath();
                        wFilename.setText( str );
                    }
                } else {
                    FileDialog dialog = new FileDialog( shell, SWT.OPEN );
                    dialog.setFilterExtensions( new String[] { "*.yaml;*.YAML", "*" } );
                    if ( wFilename.getText() != null ) {
                        String fname = transMeta.environmentSubstitute( wFilename.getText() );
                        dialog.setFileName( fname );
                    }

                    dialog.setFilterNames( new String[] {
                            BaseMessages.getString( PKG, "System.FileType.YAMLFiles" ),
                            BaseMessages.getString( PKG, "System.FileType.AllFiles" ) } );

                    if ( dialog.open() != null ) {
                        String str = dialog.getFilterPath() + System.getProperty( "file.separator" ) + dialog.getFileName();
                        wFilename.setText( str );
                    }
                }
            }
        } );

        // Detect X or ALT-F4 or something that kills this window...
        shell.addShellListener( new ShellAdapter() {
            public void shellClosed( ShellEvent e ) {
                cancel();
            }
        } );

        wTabFolder.setSelection( 0 );

        // Set the shell size, based upon previous time...
        setSize();
        getData( input );
        ActiveStreamField();
        setIncludeFilename();
        setIncludeRownum();
        input.setChanged( changed );
        wFields.optWidth( true );

        shell.open();
        while ( !shell.isDisposed() ) {
            if ( !display.readAndDispatch() ) {
                display.sleep();
            }
        }
        return stepname;
    }

    private void setXMLStreamField() {
        try {

            wYAMLLField.removeAll();

            RowMetaInterface r = transMeta.getPrevStepFields( stepname );
            if ( r != null ) {
                r.getFieldNames();

                for ( int i = 0; i < r.getFieldNames().length; i++ ) {
                    wYAMLLField.add( r.getFieldNames()[i] );

                }
            }
        } catch ( KettleException ke ) {
            new ErrorDialog(
                    shell, BaseMessages.getString( PKG, "YamlInputDialog.FailedToGetFields.DialogTitle" ), BaseMessages
                    .getString( PKG, "YamlInputDialog.FailedToGetFields.DialogMessage" ), ke );
        }
    }

    private void ActiveStreamField() {
        wlYamlField.setEnabled( wYAMLStreamField.getSelection() );
        wYAMLLField.setEnabled( wYAMLStreamField.getSelection() );
        wlYamlIsAFile.setEnabled( wYAMLStreamField.getSelection() );
        wYAMLIsAFile.setEnabled( wYAMLStreamField.getSelection() );

        wlFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wbbFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wbaFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wlFilemask.setEnabled( !wYAMLStreamField.getSelection() );
        wFilemask.setEnabled( !wYAMLStreamField.getSelection() );
        wlFilenameList.setEnabled( !wYAMLStreamField.getSelection() );
        wbdFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wbeFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wbShowFiles.setEnabled( !wYAMLStreamField.getSelection() );
        wlFilenameList.setEnabled( !wYAMLStreamField.getSelection() );
        wFilenameList.setEnabled( !wYAMLStreamField.getSelection() );
        wInclFilename.setEnabled( !wYAMLStreamField.getSelection() );
        wlInclFilename.setEnabled( !wYAMLStreamField.getSelection() );

        if ( wYAMLStreamField.getSelection() ) {
            wInclFilename.setSelection( false );
            wlInclFilenameField.setEnabled( false );
            wInclFilenameField.setEnabled( false );
        } else {
            wlInclFilenameField.setEnabled( wInclFilename.getSelection() );
            wInclFilenameField.setEnabled( wInclFilename.getSelection() );
        }

        wAddResult.setEnabled( !wYAMLStreamField.getSelection() );
        wlAddResult.setEnabled( !wYAMLStreamField.getSelection() );
        wLimit.setEnabled( !wYAMLStreamField.getSelection() );
        wlLimit.setEnabled( !wYAMLStreamField.getSelection() );
        wPreview.setEnabled( !wYAMLStreamField.getSelection() );
        wGet.setEnabled( !wYAMLStreamField.getSelection() );
        enableFileSettings();
    }

    private void enableFileSettings() {
        boolean active =
                !wYAMLStreamField.getSelection() || ( wYAMLStreamField.getSelection() && wYAMLIsAFile.getSelection() );
        wlIgnoreEmptyFile.setEnabled( active );
        wIgnoreEmptyFile.setEnabled( active );
        wldoNotFailIfNoFile.setEnabled( active );
        wdoNotFailIfNoFile.setEnabled( active );
    }

    private void get() {
        YamlReader yaml = null;
        try {
            YamlInputMeta meta = new YamlInputMeta();
            getInfo( meta );

            FileInputList inputList = meta.getFiles( transMeta );

            if ( inputList.getFiles().size() > 0 ) {
                wFields.removeAll();

                yaml = new YamlReader();
                yaml.loadFile( inputList.getFile( 0 ) );
                RowMeta row = yaml.getFields();

                for ( int i = 0; i < row.size(); i++ ) {
                    ValueMetaInterface value = row.getValueMeta( i );

                    TableItem item = new TableItem( wFields.table, SWT.NONE );
                    item.setText( 1, value.getName() );
                    item.setText( 2, value.getName() );
                    item.setText( 3, value.getTypeDesc() );
                }
                wFields.removeEmptyRows();
                wFields.setRowNums();
                wFields.optWidth( true );
            }
        } catch ( Exception e ) {
            new ErrorDialog(
                    shell, BaseMessages.getString( PKG, "YamlInputDialog.ErrorParsingData.DialogTitle" ), BaseMessages
                    .getString( PKG, "YamlInputDialog.ErrorParsingData.DialogMessage" ), e );
        } finally {
            if ( yaml != null ) {
                try {
                    yaml.close();
                } catch ( Exception e ) { /* Ignore */
                }
            }
        }
    }

    public void setIncludeFilename() {
        wlInclFilenameField.setEnabled( wInclFilename.getSelection() );
        wInclFilenameField.setEnabled( wInclFilename.getSelection() );
    }

    public void setIncludeRownum() {
        wlInclRownumField.setEnabled( wInclRownum.getSelection() );
        wInclRownumField.setEnabled( wInclRownum.getSelection() );
    }

    /**
     * Read the data from the TextFileInputMeta object and show it in this dialog.
     *
     * @param in
     *          The TextFileInputMeta object to obtain the data from.
     */
    public void getData( YamlInputMeta in ) {
        if ( in.getFileName() != null ) {
            wFilenameList.removeAll();

            for ( int i = 0; i < in.getFileName().length; i++ ) {
                wFilenameList.add( new String[] {
                        in.getFileName()[i], in.getFileMask()[i], in.getRequiredFilesDesc( in.getFileRequired()[i] ),
                        in.getRequiredFilesDesc( in.getIncludeSubFolders()[i] ) } );
            }
            wFilenameList.removeEmptyRows();
            wFilenameList.setRowNums();
            wFilenameList.optWidth( true );
        }
        wInclFilename.setSelection( in.includeFilename() );
        wInclRownum.setSelection( in.includeRowNumber() );
        wAddResult.setSelection( in.addResultFile() );
        wIgnoreEmptyFile.setSelection( in.isIgnoreEmptyFile() );
        wdoNotFailIfNoFile.setSelection( in.isdoNotFailIfNoFile() );
        wYAMLStreamField.setSelection( in.isInFields() );
        wYAMLIsAFile.setSelection( in.getIsAFile() );

        if ( in.getYamlField() != null ) {
            wYAMLLField.setText( in.getYamlField() );
        }

        if ( in.getFilenameField() != null ) {
            wInclFilenameField.setText( in.getFilenameField() );
        }
        if ( in.getRowNumberField() != null ) {
            wInclRownumField.setText( in.getRowNumberField() );
        }
        wLimit.setText( "" + in.getRowLimit() );

        if ( isDebug() ) {
            logDebug( BaseMessages.getString( PKG, "YamlInputDialog.Log.GettingFieldsInfo" ) );
        }
        for ( int i = 0; i < in.getInputFields().length; i++ ) {
            YamlInputField field = in.getInputFields()[i];

            if ( field != null ) {
                TableItem item = wFields.table.getItem( i );
                String name = field.getName();
                String path = field.getPath();
                String type = field.getTypeDesc();
                String format = field.getFormat();
                String length = "" + field.getLength();
                String prec = "" + field.getPrecision();
                String curr = field.getCurrencySymbol();
                String group = field.getGroupSymbol();
                String decim = field.getDecimalSymbol();
                String trim = field.getTrimTypeDesc();

                if ( name != null ) {
                    item.setText( 1, name );
                }
                if ( path != null ) {
                    item.setText( 2, path );
                }
                if ( type != null ) {
                    item.setText( 3, type );
                }
                if ( format != null ) {
                    item.setText( 4, format );
                }
                if ( length != null && !"-1".equals( length ) ) {
                    item.setText( 5, length );
                }
                if ( prec != null && !"-1".equals( prec ) ) {
                    item.setText( 6, prec );
                }
                if ( curr != null ) {
                    item.setText( 7, curr );
                }
                if ( decim != null ) {
                    item.setText( 8, decim );
                }
                if ( group != null ) {
                    item.setText( 9, group );
                }
                if ( trim != null ) {
                    item.setText( 10, trim );
                }

            }
        }

        wFields.removeEmptyRows();
        wFields.setRowNums();
        wFields.optWidth( true );

        wStepname.selectAll();
        wStepname.setFocus();
    }

    private void cancel() {
        stepname = null;
        input.setChanged( changed );
        dispose();
    }

    private void ok() {
        try {
            getInfo( input );
        } catch ( KettleException e ) {
            new ErrorDialog(
                    shell, BaseMessages.getString( PKG, "YamlInputDialog.ErrorParsingData.DialogTitle" ), BaseMessages
                    .getString( PKG, "YamlInputDialog.ErrorParsingData.DialogMessage" ), e );
        }
        dispose();
    }

    private void getInfo( YamlInputMeta in ) throws KettleException {
        stepname = wStepname.getText(); // return value

        // copy info to TextFileInputMeta class (input)
        in.setRowLimit( Const.toLong( wLimit.getText(), 0L ) );
        in.setFilenameField( wInclFilenameField.getText() );
        in.setRowNumberField( wInclRownumField.getText() );
        in.setAddResultFile( wAddResult.getSelection() );
        in.setIncludeFilename( wInclFilename.getSelection() );
        in.setIncludeRowNumber( wInclRownum.getSelection() );
        in.setIgnoreEmptyFile( wIgnoreEmptyFile.getSelection() );
        in.setdoNotFailIfNoFile( wdoNotFailIfNoFile.getSelection() );

        in.setInFields( wYAMLStreamField.getSelection() );
        in.setIsAFile( wYAMLIsAFile.getSelection() );
        in.setYamlField( wYAMLLField.getText() );

        int nrFiles = wFilenameList.getItemCount();
        int nrFields = wFields.nrNonEmpty();

        in.allocate( nrFiles, nrFields );
        in.setFileName( wFilenameList.getItems( 0 ) );
        in.setFileMask( wFilenameList.getItems( 1 ) );
        in.setFileRequired( wFilenameList.getItems( 2 ) );
        in.setIncludeSubFolders( wFilenameList.getItems( 3 ) );

        for ( int i = 0; i < nrFields; i++ ) {
            YamlInputField field = new YamlInputField();

            TableItem item = wFields.getNonEmpty( i );

            field.setName( item.getText( 1 ) );
            field.setPath( item.getText( 2 ) );
            field.setType( ValueMeta.getType( item.getText( 3 ) ) );
            field.setFormat( item.getText( 4 ) );
            field.setLength( Const.toInt( item.getText( 5 ), -1 ) );
            field.setPrecision( Const.toInt( item.getText( 6 ), -1 ) );
            field.setCurrencySymbol( item.getText( 7 ) );
            field.setDecimalSymbol( item.getText( 8 ) );
            field.setGroupSymbol( item.getText( 9 ) );
            field.setTrimType( YamlInputField.getTrimTypeByDesc(item.getText(10)) );

            //CHECKSTYLE:Indentation:OFF
            in.getInputFields()[i] = field;
        }
    }

    // Preview the data
    private void preview() {
        try {
            // Create the XML input step
            YamlInputMeta oneMeta = new YamlInputMeta();
            getInfo( oneMeta );

            TransMeta previewMeta = TransPreviewFactory.generatePreviewTransformation(
                    transMeta,
                    oneMeta,
                    wStepname.getText());

            EnterNumberDialog numberDialog = new EnterNumberDialog( shell, props.getDefaultPreviewSize(),
                    BaseMessages.getString( PKG, "YamlInputDialog.NumberRows.DialogTitle" ),
                    BaseMessages.getString( PKG, "YamlInputDialog.NumberRows.DialogMessage" ) );

            int previewSize = numberDialog.open();
            if ( previewSize > 0 ) {
                TransPreviewProgressDialog progressDialog =
                        new TransPreviewProgressDialog(
                                shell, previewMeta, new String[] { wStepname.getText() }, new int[] { previewSize } );
                progressDialog.open();

                if ( !progressDialog.isCancelled() ) {
                    Trans trans = progressDialog.getTrans();
                    String loggingText = progressDialog.getLoggingText();

                    if ( trans.getResult() != null && trans.getResult().getNrErrors() > 0 ) {
                        EnterTextDialog etd =
                                new EnterTextDialog(
                                        shell, BaseMessages.getString( PKG, "System.Dialog.PreviewError.Title" ), BaseMessages
                                        .getString( PKG, "System.Dialog.PreviewError.Message" ), loggingText, true );
                        etd.setReadOnly();
                        etd.open();
                    }
                    PreviewRowsDialog prd =
                            new PreviewRowsDialog(
                                    shell, transMeta, SWT.NONE, wStepname.getText(), progressDialog.getPreviewRowsMeta( wStepname
                                    .getText() ), progressDialog.getPreviewRows( wStepname.getText() ), loggingText );
                    prd.open();
                }
            }
        } catch ( KettleException e ) {
            new ErrorDialog(
                    shell, BaseMessages.getString( PKG, "YamlInputDialog.ErrorPreviewingData.DialogTitle" ), BaseMessages
                    .getString( PKG, "YamlInputDialog.ErrorPreviewingData.DialogMessage" ), e );
        }
    }
}
